holmesleauja

15.04.2020 • 

Physics

Consider an inclined plane at an angle of 40.0°, with a kinetic coefficient of friction of 0.350 and a static coefficient of friction of 0.450. A block with mass of 50.0 kg is on the incline and initially at rest. A force of 535 N, parallel to the incline, pushes the block a distance of 10.0 m up the incline. Do the following:

a) Determine the speed of the object at the end of this displacement using Newton's Laws of Motion (theoretical v.1).
b) Simulate on IP and determine the % error in the speed v at the end of the displacement (experimental),
c) Repeat the above calculation using the Work-Kinetic Energy Theorem: AKE (theoretical v, 2). Determine the % error in the speed of the object at the end of the displacement.
d) Repeat the calculation again but include gravity by calculating the change in potential energy instead of the work done by gravity. Use: Wnc= ΔKE+ ΔPE (theoretical v. 3). Determine the % error in the speed of the object at the end of the displacement.

Ответ:

mianelson367

20.12.2021

Physics

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Explanation:

The mass of a body is a measure of its inertia. It means larger the mass of a body, larger will be the inertia offered by the body to change its state of motion. The following examples will clarify the concept:

Examples;

When we kick a football, it flies a long way but at the same time if we kick a stone of the same size, it hardly moves, as the stone resists a change in its motion better than the football because of its more mass.

We can increase the velocity of our bicycle by pedaling harder, i.e., on applying more force. But the same force will produce a negligible change in the motion of a bus, because in comparison to the bicycle, a bus has more tendency to oppose any change in its state of motion because of its larger mass i.e., the bus has more inertia than the bicycle.

The SI unit of mass and inertia is kilogram (kg).

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