1) In Example problem 12-2, what would the magnitude of the force of elbow be if
ID: 1897268 • Letter: 1
Question
1) In Example problem 12-2, what would the magnitude of the force of elbow be if the mass of the weight was 7.00 kg?570.7 N
649.2 N
698.1 N
465.4 N
2) The author points out in the CHECK portion of 12-4, that the answer makes sense because if h = R
Fmin ? zero
Fmin ? infinity
Fmin ? mass of the wheel
Fmin ? mass of the step
3) Refer to Figure 12-3 in Example 12-1. What point(s) can we say the net torque on the plank is zero?
The net torque is zero only about the right end.
The net torque is zero only about the left end.
The net torque is zero only about the right support.
The net torque is zero only about the left support.
The net torque is zero only about the center of mass.
The net torque is zero about all points.
4) When calculating the effect of the force due to gravity on a large extended object, you can act as if the force is applied directly to the object's...
angular center.
rotational center.
center of gravity.
center of rotational circumference.
5) In order for an object to be in static equilibrium...
the net force in all directions must be zero.
the net torque must be zero.
the object
Explanation / Answer
4)center of gravity. 5)(a) and (b). 7)force per area 9)directly below the suspension point. 10)They all intersect at the same point
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