A 5.0-m-long ladder leans against a wall at a point 4.0 m above a cement floor as shown. The ladder is uniform and has mass m = 12 kg. Assuming the wall is frictionless, but the floor is not, determine the forces exerted on the ladder by the floor and by the wall. %3D L. Foy mg

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Problem Solving 4: Ladder
A 5.0-m-long ladder leans against a wall at a point 4.0 m
above a cement floor as shown. The ladder is uniform
and has
frictionless, but the floor is not, determine the forces
exerted on the ladder by the floor and by the wall.
mass m = 12 kg . Assuming the wall is
Fw
Fc
Fcy
4.0 m
mg
FCx
COLLEGE OF SCIENC
Q2 General Physics 1:01 Rotational Motion
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES
Problem Solving 5: Seesaw
A uniform, 255-N rod that is 2.00 m long carries a 225-N weight at its right end and an
unknown weight W toward the left end. When W is placed 50.0 cm from the left end of the
rod, the system just balances horizontally when the fulcrum is located 75.0 cm from the right
end. (a) Find W. (b) If W is now moved 25.0 cm to the right, how far and in what direction
must the fulcrum be moved to restore balance?
W
225 N
Transcribed Image Text:Problem Solving 4: Ladder A 5.0-m-long ladder leans against a wall at a point 4.0 m above a cement floor as shown. The ladder is uniform and has frictionless, but the floor is not, determine the forces exerted on the ladder by the floor and by the wall. mass m = 12 kg . Assuming the wall is Fw Fc Fcy 4.0 m mg FCx COLLEGE OF SCIENC Q2 General Physics 1:01 Rotational Motion POLYTECHNIC UNIVERSITY OF THE PHILIPPINES Problem Solving 5: Seesaw A uniform, 255-N rod that is 2.00 m long carries a 225-N weight at its right end and an unknown weight W toward the left end. When W is placed 50.0 cm from the left end of the rod, the system just balances horizontally when the fulcrum is located 75.0 cm from the right end. (a) Find W. (b) If W is now moved 25.0 cm to the right, how far and in what direction must the fulcrum be moved to restore balance? W 225 N
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