8. What would be the acceleration of gravity (in m/s²) at the surface of a worl HINT Need Help? m/s2 Read It Watch It th four times Earth's mass and nine times its radius?
8. What would be the acceleration of gravity (in m/s²) at the surface of a worl HINT Need Help? m/s2 Read It Watch It th four times Earth's mass and nine times its radius?
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Transcribed Image Text:8.
9.
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What would be the acceleration of gravity (in m/s²) at the surface of a worl th four times Earth's mass and nine times its radius?
HINT
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m/s2
HINT
Calculate the magnitude of the normal force on a 15.2 kg block in the following circumstances. (Enter your answers in N.)
(a) The block is resting on a level surface.
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(b) The block is resting on a surface tilted up at a 25.8° angle with respect to the horizontal.
N
(c) The block is resting on the floor of an elevator that is accelerating downward at 2.53 m/s².
N
(d) The block is on a level surface and a force of 115 N is exerted on it at an angle of 25.8° above the horizontal.
N
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HINT
A student of mass 63.4 kg, starting at rest, slides down a slide 21.2 m long, tilted at an angle of 20.1° with respect to the horizontal. If the coefficient of kinetic friction between the student and the slide is 0.128, find the force of kinetic friction, the acceleration, and the speed she is traveling when she reaches the bottom of the slide. -
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(b) the acceleration (in m/s2)
m/s²
(a) the force of kinetic friction (in N)
N
(c) the speed she is traveling (in m/s)
m/s
e magnitudes.)
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