Physics
A force of 40.0 N is applied in the positive x-direction to a block of mass 8.75 kg, at rest on a frictionless surface.
(a)
What is the block's acceleration (in m/s2)? (Indicate the direction with the sign of your answer.)
(b)
How fast is it going (in m/s) after 5.50 s?
Homework Answers
A block of mass m = 0.59 kg is attached to a spring withforce constant...
A block of mass m = 0.59 kg is attached to a spring with
force constant 128 N/m is free to move on a frictionless,
horizontal surface as in the figure below. The block is released
from rest after the spring is stretched a distance A = 0.13
m. (Indicate the direction with the sign of your answer. Assume
that the positive direction is to the right.) (a) At that instant,
find the force on the block. N (b) At that...
1) A block of mass m = 0.52 kg is attached to a spring with force...
1) A block of mass m = 0.52 kg is attached to a spring with
force constant 119 N/m is free to move on a frictionless,
horizontal surface as in the figure below. The block is released
from rest after the spring is stretched a distance A = 0.13 m.
(Indicate the direction with the sign of your answer. Assume that
the positive direction is to the right.)
(a) At that instant, find the force on the block. N
(b)...
A block with a mass of 0.650 kg is connected to a spring, displaced in the...
A block with a mass of 0.650 kg is connected to a spring, displaced in the positive direction a distance of 50.0 cm from equilibrium, and released from rest at t = 0. The block then oscillates without friction on a horizontal surface. After being released, the first time the block is a distance of 30.0 cm from equilibrium is at t = 0.200 s. (a) What is the block's period of oscillation? 1.35s (b) What is the the...
1. Two forces are applied to a car in an effort to move it, as shown...
1. Two forces are applied to a car in an effort to move it, as shown in the Figure below. (a) What is the resultant magnitude and direction of these two forces? (h) If the car has a mass of 3500 kg. what magnitude acceleration does it have? Ignore friction 10 450 M 400 N 2. A 40.0 kg wagon is towed up a hill inclined at 17.5° with respect to the horizontal. The tow rope is parallel to the...
A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of...
A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of 7.30 N is applied. A 0.520-kg particle rests on a frictionless horizontal surface and is attached to the free end of the spring. The particle is displaced from the origin to x = 5.00 cm and released from rest at t = 0. (Assume that the direction of the initial displacement is positive. Use the exact values you enter to make later calculations.) (d)...
1) A mass of 12 kg is at rest on a horizontal surface. One force of...
1) A mass of 12 kg is at rest on a horizontal surface. One force of 33 N is applied at an angle of 32 degrees below the horizontal (in the +x direction), and a force of 14 N is applied vertically upward (perpendicular and away from the surface). What is the acceleration (in the x direction) of the mass in m/s2? If in the -x direction, include a negative sign.
co200.000 10.5 A block of mass 0.5 kg on a horizontal surface is attached to a...
co200.000 10.5 A block of mass 0.5 kg on a horizontal surface is attached to a horizontal spring of negligible mass and spring constant 50 N/m. The other end of the spring is attached to a wall, and there is negligible friction between the block and the horizontal surface. When the spring is unstretched, the block is located at x = Om. The block is then pulled to x = 0.3m and released from rest so that the block-spring system...
(13.1) An elevator riding in a frictionless vertical shaft has total mass of 1000 kg. (a)...
(13.1) An elevator riding in a frictionless vertical shaft has total mass of 1000 kg. (a) The elevator cable exerts a force of 9000 N in the upward direction on the elevator. Determine (i) the acceleration of the elevator, and (ii) how long it takes for the elevator, starting from rest, to attain a speed of 5 m/s. (b) The cable exerts a force of 12000 N [up] on the elevator. Determine (i) the acceleration of the elevator, and (ii)...
2. A 40.0 kg wagon is towed up a hill inclined at 17.5° with respect to...
2. A 40.0 kg wagon is towed up a hill inclined at 17.5° with respect to the horizontal, The tow rope is parallel to the incline and has a tension of 542 N. Assume that the wagon starts from rest at the bottom of the hill, and neglect friction. (a) How fast is the wagon going after moving 73 m up the hill? (b) What is the magnitude of the normal force acting on the wagon? 3. A 5.00 kg...
A block of mass m = 0.59 kg is attached to a spring with
force constant 128 N/m is free to move on a frictionless,
horizontal surface as in the figure below. The block is released
from rest after the spring is stretched a distance A = 0.13
m. (Indicate the direction with the sign of your answer. Assume
that the positive direction is to the right.) (a) At that instant,
find the force on the block. N (b) At that...
1) A block of mass m = 0.52 kg is attached to a spring with
force constant 119 N/m is free to move on a frictionless,
horizontal surface as in the figure below. The block is released
from rest after the spring is stretched a distance A = 0.13 m.
(Indicate the direction with the sign of your answer. Assume that
the positive direction is to the right.)
(a) At that instant, find the force on the block. N
(b)...
1. Two forces are applied to a car in an effort to move it, as shown in the Figure below. (a) What is the resultant magnitude and direction of these two forces? (h) If the car has a mass of 3500 kg. what magnitude acceleration does it have? Ignore friction 10 450 M 400 N 2. A 40.0 kg wagon is towed up a hill inclined at 17.5° with respect to the horizontal. The tow rope is parallel to the...
co200.000 10.5 A block of mass 0.5 kg on a horizontal surface is attached to a horizontal spring of negligible mass and spring constant 50 N/m. The other end of the spring is attached to a wall, and there is negligible friction between the block and the horizontal surface. When the spring is unstretched, the block is located at x = Om. The block is then pulled to x = 0.3m and released from rest so that the block-spring system...
2. A 40.0 kg wagon is towed up a hill inclined at 17.5° with respect to the horizontal, The tow rope is parallel to the incline and has a tension of 542 N. Assume that the wagon starts from rest at the bottom of the hill, and neglect friction. (a) How fast is the wagon going after moving 73 m up the hill? (b) What is the magnitude of the normal force acting on the wagon? 3. A 5.00 kg...
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