Hi there! Can someone please help? Suppose that you need to get a heavy couch into the bed of a pickup truck. You know the bed of the truck is at a height of 1.00 mm and you need a ramp that makes an angle of 40 with the ground if you are to be able to push the couch.  Use the sine function to determine how long of a board you need to use to make a ramp that just reaches the 1.00-mm high truck bed at a 40∘∘angle to the ground.

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Mechanical Properties of Solids

There are three types of matter- solid, liquid and gas. Out of them, solids have a rigid shaped and size. The intermolecular forces of attractions in solids are greatest. Mechanical properties are the physical properties of a material which it shows, when it is provided with certain amount of force or load. These properties are to be kept in mind for various purposes. When a force is applied to an object, the object may or may not get deformed depending upon its elastic property. But every time the object develops a restoring force against the force applied. This is commonly known as stress. If the object changes its dimensions due to the force applied it develops strain ( which is the ratio of change in dimension to the original dimension).