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Can someone help me on part C? The answer is 30J but I'm not
getting it...
four A rallroad car of mass 2.25 x 101 kg moving at 3.50 m's collides and...
four A rallroad car of mass 2.25 x 101 kg moving at 3.50 m's collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s (a) What is the speed of the three coupled cars after the collision? m/s (b) How much kinetic energy is lost in the collision? Need Help? ce, an 0.5-kg actor swings from a R-4s-m-long cable that is horizontal when he...
can someone help me with this, someone else tried to help me but I didn't understand...
can someone help me with this, someone else tried to help me
but I didn't understand what they said
4. A 3 kg block is pulled up a rough incline by a rope that exerts a 25 N force that is parallel to the incline. The angle of the incline 0 = 30° and the coefficient of friction between the block and incline u = 0.2. The block is pulled 1 m along the incline the block starts from rest....
Trucks can run on energy stored in a rotating flywheel with an electric motor getting the...
Trucks can run on energy stored in a rotating flywheel with an electric motor getting the flywheel up to its top speed of 847 radians per second. The flywheel is a solid, uniform cylinder with a mass of 461 kg and a radius of 0.939 meters. If the trucks uses an average power of 8.0 kW, for how many minutes can it operate before the flywheel needs to be "charged" again? By "charging" we mean the electric motor adds energy...
Can someone please help me with 18 and 19 at the bottom of the hill? Answer...
Can someone please help me with 18 and 19
at the bottom of the hill? Answer in units of m/s 017 10.0 points A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 2.1 m/s. The acceleration of gravity is 9.81 m/s2 What is the initial height of the bob? Answer in units of m. m. 018 (part 1 of 2) 10.0 points he rope A 1.74x...
can you help me to deal with this problem and draw a picture, please. thank you!...
can you help me to deal with this problem
and draw a picture, please. thank you!
A child of mass 40 kg stands beside a circular platform of mass 80 kg and radius 2 m spinning at 2 rad/s. Treat the platform as a disk (I_cm = MR^2/2) The child steps onto the rim. (a) Does the angular speed change? If so, what is the new value? (b) The child then walks to the center. Does the angular velocity change?...
Can someone please help with 1) part A of top and 2) part B of bottom?...
Can someone please help with 1) part A of top and 2) part B of
bottom? Can't seem to get them!
Part a A 0.561-kg ball is hung vertically from a spring. The spring stretches by 5.38 cm from its natural length when the ball is hanging at equilibrium. A child comes along and pulls the ball down an additional 5cm, then lets go. How long (in seconds) will t take the ball to swing up and down exactly 4...
we will look ar sa simple form or Niler with mass mois classic physics lab apparatus...
we will look ar sa simple form or Niler with mass mois classic physics lab apparatus for measuring the speed of a projectile. Figure 8.13 of the apparatus, known as a ballistic pendulum, composed of a block and some string. is fired into a block of wood with mass mw suspended like a pendulum. The bullet lastic collision with the block, becoming embedded in it. After the impact of the bul- un to a maximum height h. Given values of...
C. Now calculate your velocity and kinetic energy just before you hit the wall. (5pts) (if...
C. Now calculate your velocity and kinetic energy just before you hit the wall. (5pts) (if you couldn't do the previous problem, say that the momentum of you + the wall was 210 kg*m/s) d. A bit later in the evening, you go back for a second try... Running forward at a velocity of 9.00m/s, you don't notice that someone has removed the padding from the wall! Luckily, you are wearing a helmet, and you collide head-first with the wall,...
Please solve 1D and 2 DEF. 1. A 20.0 kg box is pulled up an inclined...
Please solve 1D and 2 DEF.
1. A 20.0 kg box is pulled up an inclined ramp by a rope with tension of 150.0 N. The incline makes an angle of 30.0 above the horizontal. The rope is parallel to the ramp. There is a kinetic friction force of 30.0 N a. Draw a free body diagram of the box, listing all forces acting on the box. b. Find the work done by each force on the box. c. Find...
four A rallroad car of mass 2.25 x 101 kg moving at 3.50 m's collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s (a) What is the speed of the three coupled cars after the collision? m/s (b) How much kinetic energy is lost in the collision? Need Help? ce, an 0.5-kg actor swings from a R-4s-m-long cable that is horizontal when he...
can someone help me with this, someone else tried to help me
but I didn't understand what they said
4. A 3 kg block is pulled up a rough incline by a rope that exerts a 25 N force that is parallel to the incline. The angle of the incline 0 = 30° and the coefficient of friction between the block and incline u = 0.2. The block is pulled 1 m along the incline the block starts from rest....
Can someone please help me with 18 and 19
at the bottom of the hill? Answer in units of m/s 017 10.0 points A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 2.1 m/s. The acceleration of gravity is 9.81 m/s2 What is the initial height of the bob? Answer in units of m. m. 018 (part 1 of 2) 10.0 points he rope A 1.74x...
can you help me to deal with this problem
and draw a picture, please. thank you!
A child of mass 40 kg stands beside a circular platform of mass 80 kg and radius 2 m spinning at 2 rad/s. Treat the platform as a disk (I_cm = MR^2/2) The child steps onto the rim. (a) Does the angular speed change? If so, what is the new value? (b) The child then walks to the center. Does the angular velocity change?...
Can someone please help with 1) part A of top and 2) part B of
bottom? Can't seem to get them!
Part a A 0.561-kg ball is hung vertically from a spring. The spring stretches by 5.38 cm from its natural length when the ball is hanging at equilibrium. A child comes along and pulls the ball down an additional 5cm, then lets go. How long (in seconds) will t take the ball to swing up and down exactly 4...
we will look ar sa simple form or Niler with mass mois classic physics lab apparatus for measuring the speed of a projectile. Figure 8.13 of the apparatus, known as a ballistic pendulum, composed of a block and some string. is fired into a block of wood with mass mw suspended like a pendulum. The bullet lastic collision with the block, becoming embedded in it. After the impact of the bul- un to a maximum height h. Given values of...
C. Now calculate your velocity and kinetic energy just before you hit the wall. (5pts) (if you couldn't do the previous problem, say that the momentum of you + the wall was 210 kg*m/s) d. A bit later in the evening, you go back for a second try... Running forward at a velocity of 9.00m/s, you don't notice that someone has removed the padding from the wall! Luckily, you are wearing a helmet, and you collide head-first with the wall,...
Please solve 1D and 2 DEF.
1. A 20.0 kg box is pulled up an inclined ramp by a rope with tension of 150.0 N. The incline makes an angle of 30.0 above the horizontal. The rope is parallel to the ramp. There is a kinetic friction force of 30.0 N a. Draw a free body diagram of the box, listing all forces acting on the box. b. Find the work done by each force on the box. c. Find...
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