Please anwer the above questions, and show which equations you used. Thank you.
ID: 1426469 • Letter: P
Question
Please anwer the above questions, and show which equations you used. Thank you.
4. 17 points My Notes For a technology project, a student has buit a vehicle, of total mass 5.00 kg, that moves itselif.As shown in the figure below, it runs on four light wheels. A reel is attached to one of the axles, and a For a technology project, a student has built a vehicle, of total mass 5.00 kg, that moves itself. As shown in the figure below, it runs on four light wheels. A reel is attached to one of the axles, and a cord originally wound on the reel goes up over a pulley attached to the vehicle to support an elevated load. After the vehicle is released from rest, the load descends very slowly, unwinding the cord to turn the axle and make the vehicle move forward (to the left in the figure below). Friction is negligible in the pulley and axle bearings. The wheels do not slip on the floor. The reel has been constructed with a conical shape so that the load descends at a constant low speed while the vehicle moves horizontally across the floor with constant acceleration, reaching a final velocity of 3.20 î m/s. with a conical shape so that the load descends at a constant low speed while the vehicle moves horizontally across the floor with constant acceleration, reaching a final velocity of 3.20 i m/s (a) Does the floor impart a horizontal impulse to the vehicle? Yes O No If so, how much? (If not, enter o.) i kg m/s (b) Does the floor do work on the vehicle? Yes O No If so, how much? (If not, enter o.) N·mExplanation / Answer
(a)
impulse = (force) (time)
= (mass) (velocity)
the horizontal impulse imparted is = (5)(3.20)
= 16 kg.m/s
(b)
the floor does no work on the vehicle
(c)
it comes from the elevated load
(d)
the final kinetic energy comes from the elevated load
(e)
gravity on hanging mass