You are riding in an elevator on the way to the 10th floor of your building.
The elevator is accelerating upward with a=1.7m/s2.
Beside you is the box whose weight is 245N.
While the elevator is accelerating upward, you push horizontally on the box to slide it at constant speed toward the elevator door.
If the coefficient of kinetic friction between the box and the elevator floor is ?=0.73, what magnitude of force must you apply?
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A mass m=2.2kg is hanging by a light rope from the ceiling of a cart.
The ceiling of the cart is parallel to the road.
The cart is traveling in a straight line on a horizontal street.
You observe that the mass hangs at rest with respect to the cart when the angle between the rope and the ceiling of the cart is ?=37°.
What is the acceleration of the bus?
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