What is the gravitational potential energy of a ball with a weight of 69 N when it is sitting on a shelf 1.6 m above the floor? J What assumption do you need to make to get your answer

A student pushes a baseball of m = 0.15kg down onto the top of a vertical spring that has its lower end fixed to a table, compressing the spring a distance of d = 0.16 meters froms its equailibrium length. The springs constant of the spring constant k = 610 N/m. Let the gravitional potential energy be zero at the position of the baseball in the compressed spring.   a. what is the maximum height, h, in meters, that the ball reaches above the equilibrium point? b. What is the ball's velocity, in meters per second, at half of the maximum height relative to the equilibrium point

A 1900-kg pile driver is used to drive a steel beam into the ground. The pile driver falls 6.00 m before coming into contact with the top of the beam, and it drives the beam 9.0 cm farther into the ground as it comes to rest. Using energy considerations, calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest.             N

n eText Part B A microwave oven of mass 10.0 kg is pushed a distance 8.45 m up the sloping surface of a loading ramp inclined at an angle of 38.6 ° above the horizontal, by a constant force F with a magnitude 140 N and acting parallel to the ramp. The coefficient of kinetic friction between the oven and the ramp is Area What is the work done on the oven by the friction force? nent Sharing Take the free fall acceleration to be 9.80 m/s . 0.280. ettings e Tools Wi 185.09 J Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part C Compute the increase in potential energy for the oven. Take the free fall acceleration to be 9.80 m/s . ΑΣΦ ? J P Pearson Copyright 2022 Pearson Education Inc. All rights reserved. I Terms of Use | Privacy Policy I Permissions | Contact - Type here to search 080 080- TIT

An object with mass 2 kg moves from a location m near the Earth's surface to location m. What is the change in the potential energy of the system consisting of the object plus the Earth? (Assume that the +y axis points vertically up from the ground.) i

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. Each step is of uniform height d. The mass of each object is a multiple of the base mass m: object 1 has mass 4.90m, object 2 has mass 1.46m, and object 3 has mass m. When the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. If the objects are then relocated as shown, what is the new total potential energy of the system? Each answer requires the numerical coefficient to an algebraic 2 expression. Each algebraic expression is given using some 3 combination of the variables m, g, and d, where g is the acceleration due to gravity. Enter only the numerical coefficient. (Example: If the answer is 1.23mgd, just enter 1.23) U g,system mgd

A coffee filter of mass 1.5 grams dropped from a height of 1 m reaches the ground with a speed of 0.7 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter? Start from the Energy Principle, and choose as the system the coffee filter, the Earth, and the air. J

A 100 kg block is pulled at a constant speed of 4.0 m/s across a horizontal floor by an applied force of 141 N directed 37° above the horizontal. What is the rate at which the force does work on the block? W

n 3 of 11 Mickey, a daredevil mouse of mass M, is attempting to become the world's first "mouse cannonball." He is loaded into a spring- powered gun pointing up at some angle, and is shot into the air. The gun's spring has force constant k and is initially compressed a distance X from its relaxed position. If Mickey has a constant horizontal speed V while he is flying through the air, how high above his initial location in the gun does Mickey soar? Find an expression for Mickey's maximum height hm in terms of M, V, X, k, and g. hm = contact us help privacy policy terms of use about us careers MacBook Air

A diver of mass 68 kg stands on a diving board 5.0 m above a pool. At the moment of the jump, the diving board transfers its 3400 J of energy to the diver, who leaves the board at an angle of 35°. a. What is the speed of the diver just before they enter the water? b. Suppose that when the diver enters the water, they experience an acceleration of a->water= +4 m/ss J. What is the minimum depth of the pool necessary so that this diver comes to rest exactly at the bottom of the pool