- #1
blueice2
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Hi, I need some help with these questions:
A small fish [m=2kg] hangs from one end of a make-shift fishing rod [m=0.5kg] of length 2.5m. The other end of the fishing rod is braced against the ground and held horizontally by a child's hand, 1m from the bottom of the rod. Find the force exerted by the child's hand and the x and y forces on the rod from the ground. (Ans: 65.7N, 65.7N, 24.5N)
and
A 160cm tall person lies horizontally on a massless board supported by two scales. 1 is positioned at the person's feet and the other at the person's head. If the scale at head reads 32.8kg and the scale at the feet reads 29.4kg, where is the person's centre of gravity? (Ans: 0.76m from head)
Thanks
A small fish [m=2kg] hangs from one end of a make-shift fishing rod [m=0.5kg] of length 2.5m. The other end of the fishing rod is braced against the ground and held horizontally by a child's hand, 1m from the bottom of the rod. Find the force exerted by the child's hand and the x and y forces on the rod from the ground. (Ans: 65.7N, 65.7N, 24.5N)
and
A 160cm tall person lies horizontally on a massless board supported by two scales. 1 is positioned at the person's feet and the other at the person's head. If the scale at head reads 32.8kg and the scale at the feet reads 29.4kg, where is the person's centre of gravity? (Ans: 0.76m from head)
Thanks