Question

please answer all questions. it is my last question remaining that is why i can't post separately.i would be very thankful

1. A uniform horizontal lever of length 6.0 m is
   pivoted at its mid-point. The following forces
   are acting on the lever: a 0.53 N vertically downward force
   acting at the right end of the lever, a 3 N
   vertically downward force acting at the left end of the
   lever, and a 5 N vertically downward force acting at a
   point on the lever 0.5 m away from the left end.
   Calculate the net torque acting on the lever. (1 point)
   1. 31.073 N m
   2. 5.407 N m
   3. 31.36 N m
   4. 6.271 N m
   5. 19.91 N m
2. A uniform horizontal lever of length 2.8 m is
   pivoted at its mid-point. The following forces
   are acting on the lever: a 10 N vertically downward force
   acting at the right end of the lever, a 0.43 N downward
   force (with downward vertical component) that makes an
   angle of 30 deg with the horizontal-right acting
   at the left end of the lever, and a 7 N vertically upward
   force acting at a point on the lever 0.3 m away from the left end.
   Calculate the net torque acting on the lever. (1 point)
   1. -32.518 N m
   2. -18.865 N m
   3. -21.399 N m
   4. -11.456 N m
   5. -5.747 N m
3. A uniform horizontal lever of length 3.63 m is pivoted
   at its mid-point. A vertically downward force of 7.71 N is
   acting at the right end of the lever. Calculate the vertically
   downward force that needs to be applied
   at a dstance of 0.27 m to the left of the pivot if the lever
   is to be in equilibrium? (1 point)
   1. 92.34 N
   2. 74.004 N
   3. 61.058 N
   4. 51.828 N
   5. 17.505 N

Answer 1