Table of Contents
- 1 What is the acceleration of the crate?
- 2 What is the coefficient of kinetic friction between the crate and the floor?
- 3 What force is exerted on the car by the truck?
- 4 What is the force exerted on the car?
- 5 How does the size of the force exerted on the car by the truck compare with the size of the force exerted on the truck by the car?
What is the acceleration of the crate?
Because there is no friction, the net force on the crate is simply the horizontal component of the string tension. That 938cos 40 = the 105 kg times its acceleration. So 719 = 105a and a = 6.84 m/s2.
What is the coefficient of kinetic friction between the crate and the floor?
0.700
Static and Kinetic Friction The coefficient of static friction between the crate and floor is 0.700 and the coefficient of kinetic friction is 0.600. A horizontal force P → is applied to the crate.
What force is exerted on the car by the truck?
In this case, the force on the truck exerted by the car is Ma directed forward (Newton #2 again), and the force on the car exerted by the truck is also Ma, but directed backwards (Newton’s third law). They are affected by the gravitational forces of masses in buildings and cars.
How do you find the acceleration of a slope?
When you know that F = ma, you can solve for the acceleration. After you solve for the force along the ramp, you can get the acceleration (a = F/m) along the ramp. Your block of ice is going to accelerate down the ramp.
What horizontal force must you apply to the crate to get the crate moving?
To start the crate moving, you have to pull with a 230-N horizontal force. Once the crate “breaks loose” and starts to move, you can keep it moving at constant velocity with only 200 N.
What is the force exerted on the car?
The only two external forces acting on the car are its weight w and the normal force of the road N. (A frictionless surface can only exert a force perpendicular to the surface—that is, a normal force.)
How does the size of the force exerted on the car by the truck compare with the size of the force exerted on the truck by the car?
The force exerted onto the car is ten times greater than the force exerted onto the truck. The magnitude of the acceleration of the car is equal to the magnitude of the acceleration of the truck.