Download 1. What is the weight of a 200 kg object? 2. A woman - IES Al

1. What is the weight of a 200 kg object?
2. A woman exerts a force of 500 N straight up to lift a 35 kg basket. What
is the acceleration of the basket?
3. A 20.0 kg mass is pulled by along a surface by a horizontal force of 100
N. Friction is 20.0 N. What is the acceleration of the mass?
4. A 49-N block is pulled by a horizontal force of 50.0 N along a rough
horizontal surface at a constant acceleration of 6 m/s/s. What is the
coefficient of friction?
5. A 15.0 kg block is pulled by a horizontal force of 30.0 N along a rough
horizontal surface at constant velocity. What is the coefficient of friction?
6. A satellite has a mass of 1000 kg and is orbiting the earth which has a
mass of 5.9742 x1024 kg. If the satellite and the earth are centered 500 km
apart, then what is the force of gravity between the satellite and the earth?
7. A smooth wooden block is placed on a smooth wooden tabletop. You find
that you must exert a force of 14.0 N to keep the 40.0 N block moving at a
constant velocity.
a) What is the coefficient of sliding friction for the block and the table?
b) If a 20.0 N brick is placed on the block, what force will be required to
keep the block and brick moving at a constant velocity?
8. A box weighs 75 N.
a) What is the mass of the box?
b) What is the acceleration of the box if an upward force of 90 N is
applied?
9. A horizontal force of 15N must be applied to get a block to begin sliding
across the floor. How much force is required to slide the block if the weight
of the block is doubled?
10. A 35-kg crate rests on a horizontal floor, and a 65-kg person is standing
on the crate. Determine the magnitude of the normal force that (a) the floor
exerts on the crate and (b) the crate exerts on the person.
11. A cup of coffee is sitting on a table in an airplane that is flying at a
constant altitude and a constant velocity. The coefficient of static friction
between the cup and the table is 0.30. Suddenly, the plane accelerates, its
altitude remaining constant. What is the maximum acceleration that the
plane can have without the cup sliding backward on the table?