Author: Anonymous

A male patient is recovering from a tibia fracture from 8 weeks ago. He presents to you with new-onset fever without upper respiratory symptoms. Patient denies sick contacts. Which test will provide the least amount of pertinent information to assist in diagnosis?

During spring semester at MIT, residents of the parallel buildings of the East Campus dorms battle one another with large catapults that are made with surgical hose mounted on a window frame. A balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. Assume that the stretching of the hose obeys Hooke’s law with a spring constant of 57.0 N/m. If the hose is stretched by 5.80 m and then released, how much work does the force from the hose do on the balloon in the pouch by the time the hose reaches its relaxed length?

A flywheel with a diameter of 1.23 m is rotating at an angular speed of 150 rev/min. What is the linear speed (in m/s) of a point on the rim of the flywheel? 

Suppose the coefficient of static friction between the road and the tires on a car is 0.4 and the car has no negative lift. What speed will put the car on the verge of sliding as it rounds a level curve of 34.0 m radius?

Suppose the coefficient of static friction between the road and the tires on a car is 0.4 and the car has no negative lift. What speed will put the car on the verge of sliding as it rounds a level curve of 50.0 m radius?

A circular-motion addict of mass 40.0 kg rides a Ferris wheel around in a vertical circle of radius 12.0 m at a constant speed of 5.0 m/s. What is the magnitude of the normal force on the addict from the seat when both go through the highest point of the circular path?

A shopper pushes a grocery cart 10.0 m at constant speed on level ground, against a 28.9.0 N frictional force. He pushes in a direction 38.0° below the horizontal. What is the work (in J) done on the cart by the shopper?

A 105-kg wood block is resting on a wooden floor, what maximum force (in N) can you exert horizontally on the block without moving it? ( Coefficient of static friction between crate and wood floor is 0.5) 

A shopper pushes a grocery cart 36.0 m at constant speed on level ground, against a 46.0 N frictional force. He pushes in a direction 38.0° below the horizontal. What is the work (in J) done on the cart by the shopper?

A shopper pushes a grocery cart 45.0 m at constant speed on level ground, against a 50.0 N frictional force. He pushes in a direction 38.0° below the horizontal. What is the work (in J) done on the cart by the shopper?