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A child of mass 26kg is traveling at 4.0ms at the bottom of the slide which is 2m vertically below the top. The length of the slide is 6m.
Calculate
i) The energy used in overcoming the friction during the child's descent
ii) The magnitude of the frictional force.
Totally confused about this question. I know Work done = Force.displacement in the direction of the force but then does this mean that question i) is equal to W=26(9.8)Cos19.47?
I have no idea. Would appreciate any help.
thank you
Calculate
i) The energy used in overcoming the friction during the child's descent
ii) The magnitude of the frictional force.
Totally confused about this question. I know Work done = Force.displacement in the direction of the force but then does this mean that question i) is equal to W=26(9.8)Cos19.47?
I have no idea. Would appreciate any help.
thank you