A small car of mass 380 kg is pushing a large truck of mass 900 kg due east on a level road. The car exerts a horizontal force of 1600 N on the truck. What is the magnitude of the force that the truck exerts on the car?
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A small car of mass 380 kg is pushing a large truck of mass 900
kg due east on a level road. The car exerts a horizontal force of 1600 N
on the truck. What is the magnitude of the force that the truck exerts on
the car?
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- A block that weighs 60 N is intially at rest on a horizontal surface. A horizontal force F1 of magnitude 22 N and a vertical force F2 are then applied to the block. The coefficients of friction for the block and the surface are us = 0.50 and uk = 0.25. Determine the magnitude of the frictional force acting on the block if the magnitude of F2 is (a) 10 N, (b) 20 NMary applies a force of 71 N to push a box with an acceleration of 0.45 m/s2. When she increases the pushing force to 79 N, the box's acceleration changes to 0.63 m/s2. There is a constant friction force present between the floor and the box. (a)What is the mass of the box in kilograms? ?kg (b)What is the coefficient of kinetic friction between the floor and the box?In the figure below, a box of Cheerios (mass mc = 1.5 kg) and a box of Wheaties (mass mw = 2.7 kg) are accelerated across a horizontal surface by a horizontal force F applied to the Cheerios box. The magnitude of the frictional force on the Cheerios box is 2.0 N, and the magnitude of the frictional force on the Wheaties box is 4.1 N. If the magnitude of F is 12 N, what is the magnitude of the force on the Wheaties box from the Cheerios box? |---Select--- mc Mw
- Please atleast answer this questionSammy is doing a strength testing session on the turf in preparation for the upcoming basketball season. Sammy's mass is 55 kg and she is trying to push a 105 kg sled across the artificial turf outside on Raymond Field. The coefficient of static friction between the sled and the turf is 0.3. If Sammy pushes only horizontally against the sled, how much force must she push with to just initiate movement of the sled? (hint: be sure to follow the steps outlined for free body diagrams, including drawing the free body diagram with all forces, force equations in the X and Y direction, and a coordinate system)A car of mass 800 kg as shown in the figure is subject to three forces F1, F2, and F3. The two forces F1=1000 N and F2=500 N are directed along the +X direction. Third force F3 is not shown in the figure. Ignore the effect of frictional force exerted by the tires on the road. a) Suppose the car is stationary, then what is the direction and magnitude of the force F3? b) The car started moving and attained a velocity of +500 m/s in 10 second due a change in F3. What will be the new direction and magnitude of the the force F3? c) How far does the car traveled during this 10 second time interval?
- While sliding a couch across a floor, Hannah and Andrea exerts forces Fh and Fa on the couch. Hannah's force is due north with a magnitude of Fh=71 N and Andrea's force is theta= 36 degrees east of north with a magnitude of Fa = 335N. In this problem, use a coordinate system with y directed north and x directed east. a) Find the net force in the y-direction in Newtons. b) Find the net force in the x-direction in Newtons. c) Calculate the angle in degrees north of east of the net force exerted on the couch by Hannah and Andrea, Fha d) Hannah and Andrea's housemates, David and Stephanie disagree with the move and want to prevent its relocation. Their combined force Fds must be equal and opposite to that of Fha. What is the magnitude in Newtons of the force Fds which will prevent the relocation.A stack of four textbooks sits on top of a desk. The mass of the bottom book is 5.0 kg, on top of which is a 4.5 kg book, then a 4.0 kg book, then a 3.5 kg book. What is the normal force exerted on each book?A horizontal force of 87.2 N is applied to a 40.5 kg crate on a rough, level surface. If the crate accelerates at 1.23 m/s2, what is the magnitude of the force of kinetic friction (in N) acting on the crate?
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