a.) How large is the normal force acting on the box? a.) 118 N b.) 96 N c.) 77 N d.) 67 N b.) How large is the static friction force holding the box in place? a.) 118 N b.) 96 N c.) 77 N d.) 67 N c.) Fed up with life on this planet, I develop a "Fargate" that allows instantaneous travel to other worlds. The first planet I arrive on has a radius half that of the Earth, and half the Earth's mass. What acceleration due to gravity will I feel on the surface of my new home, compared to my usual g = 9.8 m/s²? a.) Less than on Earth: One-half of g b.) The same as on Earth: One g c.) More than on Earth: Two times g d.) Much more than on Earth: Eight times g

a.) How large is the normal force acting on the box? a.) 118 N b.) 96 N c.) 77 N d.) 67 N b.) How large is the static friction force holding the box in place? a.) 118 N b.) 96 N c.) 77 N d.) 67 N c.) Fed up with life on this planet, I develop a "Fargate" that allows instantaneous travel to other worlds. The first planet I arrive on has a radius half that of the Earth, and half the Earth's mass. What acceleration due to gravity will I feel on the surface of my new home, compared to my usual g = 9.8 m/s²? a.) Less than on Earth: One-half of g b.) The same as on Earth: One g c.) More than on Earth: Two times g d.) Much more than on Earth: Eight times g

Physics for Scientists and Engineers

10th Edition

ISBN:9781337553278

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: The Laws Of Motion

Section: Chapter Questions

Problem 16P: An iron bolt of mass 65.0 g hangs from a string 35.7 cm long. The top end of the string is fixed....

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An iron bolt of mass 65.0 g hangs from a string 35.7 cm long. The top end of the string is fixed. Without touching it, a magnet attracts the bolt so that it remains stationary, but is displaced horizontally 28.0 cm to the tight from the previously vertical line of the string. The magnet is located to the right of the bolt and on the same vertical level as the bolt in the final configuration. (a) Draw a free-body diagram of the bolt. (b) Find the tension in the string, (c) Find the magnetic force on the bolt.
A uniform pole is propped between the floor and the ceiling of a room. The height of the room is 7.80 ft, and the coefficient of static friction between the pole and the ceiling is 0.576. The coefficient of static friction between the pole and the floor is greater than that between the pole and the ceiling. What is the length of the longest pole that can be propped between the floor and the ceiling?
A 15.0-lb block rests on a horizontal floor, (a) What force does the floor exert on the block? (b) A rope is tied to the block and is run vertically over a pulley. The other end is attached to a free-hanging 10.0-lb object. What now is the force exerted by the floor on the 15.0-lb block? (c) If the 10.0-lb object in part (b) is replaced with a 20.0-lb object, what is the force exerted by the floor on the 15.0-lb block?
A 15.0-lb block rests on the floor. (a) What force does the floor exert on the block? (b) A rope is tied to the block and is run vertically over a pulley. The other end is attached to a free-handing 10.0-lb object. What now is the force exerted by the floor on the 15.0-lb block? (c) If the 10.0-lb object in part (b) is replaced with a 20.0-lb object, what is the force exerted by the floor on the 15.0-lb block?
To determine the coefficients of friction between rubber and various surfaces, a student uses a rubber eraser and an incline. In one experiment, the eraser begins to slip down the incline when the angle of inclination is 36.0 and then moves down the incline with constant speed when the angle is reduced to 30.0. From these data, determine the coefficients of static and kinetic friction for this experiment.
In Problem 10, the mass of the sign is 25.4 kg, and the mass of the potted plant is 66.7 kg. a. Assuming the objects are in equilibrium, determine the magnitude of the static friction force experienced by the potted plant. b. What is the maximum value of the static friction force if the coefficient of static friction between the pot and the roof is 0.572?
The leg and cast in Figure P4.40 weigh 220 N (w1). Determine the weight w2 and the angle needed so that no force is exerted on the hip joint by the leg plus the cast. Figure P4.40
Calculate the normal force on a 15.0 kg block in the following circumstances: (a) The block is resting on a level surface. (b) The block is resting on a surface tilted up at a 30.0 angle with respect to the horizontal. (c) The block is resting on the floor of an elevator that is accelerating upwards at 3.00 m./s2. (d) The block is on a level surface and a force of 125 N is exerted on it at an angle of 30.0 above the horizontal. (Sec Section 1.5.)
The Lunar Reconnaissance Orbiter (LRO), with mass m = 1850 kg, maps the surface of the Moon from an orbital altitude of 50.0 km. What are the magnitude and direction of a. the force the LRO experiences due to the Moons gravity and b. the force exerted by the LRO on the Moon?
(a) What is the maximum frictional force in the knee joint of a person who supports 66.0 kg of her mass on that knee? (b) During strenuous exercise it is possible to exert forces to the joints that are easily ten times greater than the weight being supported. What is the maximum force of friction under such conditions? The frictional forces in joints are relatively small in all circumstances except when the joints deteriorate, such as from injury or arthritis. Increased frictional forces can cause further damage and pain.
A box rests on the back of a truck. The coefficient of static friction between the box and the bed of the truck is 0.800. (a) When the truck accelerates forward, what force accelerates the box? (b) Find the maximum acceleration the truck can have before the box slides.
(a) Calculate the acceleration due to gravity on the surface of the Sun. (b) By what factor would your weight increase if you could stand on the Sun? (Never mind that you cannot.)