■ I. A 2,000 kg car is on an inclined slope at an angle of 300 with the horizontal. It hasbeen left in neutral without the parking brake on.a. Determine the perpendicular force ( FÅ) and the parallel force (F).b. If the coefficient of friction is 0.35 calculate the force of friction.c. When will the car begin to slide down the slope? ▪ 2. A crate of mass 90 kg is placed on an inclined plane at an angle of 30° with thehorizontal. The coefficient of friction between the crate and the plane is 0.20. Findthe acceleration of the crate down the plane.▪ 3.A man wishes to push a container up a ramp that is at an angle of 20⁰ with theground. The container weighs 950 N. The coefficient of friction is 0.14.■a. Determine the components FN and Fp.▪ b. Determine the force of friction.▪ c. What force must the man exert to push the container safe up the range?

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Description: ■ I. A 2,000 kg car is on an inclined slope at an angle of 300 with the horizontal. It hasbeen left in neutral without the parking brake on.a. Determine the perpendicular force ( FÅ) and the parallel force (F).b. If the coefficient of friction is 0.

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■ 1. A 2,000 kg car is on an inclined slope at an angle of 30° with the horizontal

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Concept explainers

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!

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■ I. A 2,000 kg car is on an inclined slope at an angle of 300 with the horizontal. It has
been left in neutral without the parking brake on.
a. Determine the perpendicular force ( FÅ) and the parallel force (F).
b. If the coefficient of friction is 0.35 calculate the force of friction.
c. When will the car begin to slide down the slope?

▪ 2. A crate of mass 90 kg is placed on an inclined plane at an angle of 30° with the
horizontal. The coefficient of friction between the crate and the plane is 0.20. Find
the acceleration of the crate down the plane.
▪ 3.A man wishes to push a container up a ramp that is at an angle of 20⁰ with the
ground. The container weighs 950 N. The coefficient of friction is 0.14.
■
a. Determine the components FN and Fp.
▪ b. Determine the force of friction.
▪ c. What force must the man exert to push the container safe up the range?

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