When a 25-kg crate is pushed across a frictionless horizonta…
When a 25-kg crate is pushed across a frictionless horizontal floor with a force of 200 N, directed 20° below the horizontal as shown in figure, the magnitude of the normal force of the floor on the crate is: (show the work on whiteboard to camera)
Read DetailsA 0.50-kg block is placed against a horizontal spring with a…
A 0.50-kg block is placed against a horizontal spring with a spring constant of 400 N/m on a frictionless surface. The spring is compressed 0.20 m and then released. (a) What is the elastic potential energy stored in the spring? (b) What is the speed of the block when it leaves the spring? SHOW WORK.
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