A block is sitting on a rotating turntable, and it is not slipping. If the turntable...
A block is sitting on a rotating turntable, and it is not slipping. If the turntable is
rotating with a constant angular velocity, which of the following statements is true
about the block? You might nd it helpful to draw a picture of this situation.
a) Its acceleration is parallel to its velocity.
b) Its acceleration is perpendicular to its velocity.
c) The angle between the directions of its acceleration and its velocity is 45
◦
.
d) Its acceleration is zero.
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A block is sitting on a rotating turntable, and it is not
slipping. If the turntable...
A block is sitting on a rotating turntable, and it is not slipping. If the turntable...
A block is sitting on a rotating turntable, and it is not slipping. If the turntable is rotating with a constant angular velocity, which of the following statements is true about the block? You might find it helpful to draw a picture of this situation. a) Its acceleration is parallel to its velocity. b) Its acceleration is perpendicular to its velocity. c) The angle between the directions of its acceleration and its velocity is 45 degrees d) Its acceleration is...
A record on a turntable starts from rest and begins rotating at an angular acceleration of...
A record on a turntable starts from rest and begins rotating at an angular acceleration of 0.3 rev/s for 2s. After 2s, it maintains its velocity and rotates at this constant angular speed. A) What is the angular speed of the record after the first 2s? B) What is the total angular displacement after 10s?
An electric turntable 0.790 m in diameter is rotating about a fixed axis with an initial...
An electric turntable 0.790 m in diameter is rotating about a fixed axis with an initial angular velocity of 0.280 rev/s and a constant angular acceleration of 0.881 rev/s2. a)What is the tangential speed of a point on the rim of the turntable at t = 0.192 s? Express your answer in meters per second. b)What is the magnitude of the resultant acceleration of a point on the rim at t = 0.192 s? Express your answer in meters per...
Consider a bug which is crawling on the surface of a turntable rotating with constant angular...
Consider a bug which is crawling on the surface of a turntable rotating with constant angular velocity wo. List all the forces acting on it in a system of coordinates painted on the turntable (z is perpendicular to the turntable and the rotation is around the z-axis) and the direction of each of those forces, in each of the following cases: a) when the bug is moving out from the center of the turntable along a radius at constant speed...
Problem 1 (20 POINTS) 0.6 m B The wheel rolls without slipping with a constant 10...
Problem 1 (20 POINTS) 0.6 m B The wheel rolls without slipping with a constant 10 rad/s angular velocity. (a) mark the instantaneous center of zero velocity on the picture (b) what is the angular acceleration of the wheel (c) draw the velocity vector of the center of the wheel and show its direction (d) calculate the velocity of the center of the wheel (e) calculate the acceleration of the center of the wheel (f) draw the velocity vector at...
Consider a turntable to be a circular disk of moment of inertia 0.142 kg⋅m2 rotating at...
Consider a turntable to be a circular disk of moment of inertia 0.142 kg⋅m2 rotating at a constant angular velocity 4.80 rad/s2 around an axis through the center and perpendicular to the plane of the disk (the disk's "primary axis of symmetry"). The axis of the disk is vertical and the disk is supported by frictionless bearings. The motor of the turntable is off, so there is no external torque being applied to the axis. Another disk (a record) is...
A record turntable rotating at 33 1/3 rev/min slows down and stops in 45 s after...
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Which ones did I get wrong ? kg block is sitting on a ramp that makes...
Which ones did I get wrong ?
kg block is sitting on a ramp that makes a 20 degree angle with the horizontal. What is the 1) A magnitude of the normal force exerted by the block on the ramp? A between 0 and 10 N between 10 and 20 N C) between 40 and 50 N D) between 20 and 30 N E) None of the above Which of the following is NOT true about forces? 2) A) Gravitational...
QUESTION 3. (3a) Show that - 2mü xi – mū x (W x ) where F...
QUESTION 3. (3a) Show that - 2mü xi – mū x (W x ) where F is the total force acting on an object of mass m measured by an inertial observer and is the acceleration of the object measured in a frame rotating with angular velocity الها (3b) A bug crawls radially outward with constant speed v from the center of a turntable rotating with constant angular velocity w. Consider a coordinate system fixed to the turntable, in which...
A heavy turntable, used for rotating large objects, is a solid cylindrical wheel that can rotate...
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Consider a bug which is crawling on the surface of a turntable rotating with constant angular velocity wo. List all the forces acting on it in a system of coordinates painted on the turntable (z is perpendicular to the turntable and the rotation is around the z-axis) and the direction of each of those forces, in each of the following cases: a) when the bug is moving out from the center of the turntable along a radius at constant speed...
Problem 1 (20 POINTS) 0.6 m B The wheel rolls without slipping with a constant 10 rad/s angular velocity. (a) mark the instantaneous center of zero velocity on the picture (b) what is the angular acceleration of the wheel (c) draw the velocity vector of the center of the wheel and show its direction (d) calculate the velocity of the center of the wheel (e) calculate the acceleration of the center of the wheel (f) draw the velocity vector at...
Which ones did I get wrong ?
kg block is sitting on a ramp that makes a 20 degree angle with the horizontal. What is the 1) A magnitude of the normal force exerted by the block on the ramp? A between 0 and 10 N between 10 and 20 N C) between 40 and 50 N D) between 20 and 30 N E) None of the above Which of the following is NOT true about forces? 2) A) Gravitational...
QUESTION 3. (3a) Show that - 2mü xi – mū x (W x ) where F is the total force acting on an object of mass m measured by an inertial observer and is the acceleration of the object measured in a frame rotating with angular velocity الها (3b) A bug crawls radially outward with constant speed v from the center of a turntable rotating with constant angular velocity w. Consider a coordinate system fixed to the turntable, in which...
A heavy turntable, used for rotating large objects, is a solid cylindrical wheel that can rotate about its central axle with negligible friction. The radius of the wheel is 0.330 m. A constant tangential force of 200 N applied to its edge causes the wheel to have an angular acceleration of 0.896 rad/s2. (a) What is the moment of inertia of the wheel (in kg ·m2)? kg · m2 (b) What is the mass (in kg) of the wheel? kg...
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