An iron block with mass mb slides down a frictionless hill of height h. at the base of the hill, it collides with and sticks to a magnet with mass mm.
a) what is the speed v of the block and magnet immediately after the collision?
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what is the speed of the block and magnet immediately after the collision?
v=(mb+mmmb)2gh√
v=(mbmb+mm)2gh√
v=(mbmm)2gh√
v=(mb+mmmb)2gh
v=(mbmm)2gh
b)now assume that the two masses continue to move at the speed v from part a until they encounter a rough surface. the coefficient of friction between the masses and the surface is μ. if the blocks come to rest after a distance s, which of the following equations would you use to find s?
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now assume that the two masses continue to move at the speed from part a until they encounter a rough surface. the coefficient of friction between the masses and the surface is . if the blocks come to rest after a distance , which of the following equations would you use to find ?
((mb)2mb+mm)gh=μmbgs
((mb)2mb+mm)gh=μmmgs
((mb)2mb+mm)gh=μ(mb+mm)gs
((mb)2mb+mm)gh=−μ(mb+mm)gs
((mb)2mb+mm)gh=μ(mb+mm)g