|| BIO Forces during chin-ups . People who do chin-ups raise their c 1in just over a bar (the chinning bar). Supporting themselves only by their arms. Typically. the body below the arms is raised by about 30cm in a time of 1.0 s. starting from rest. Assume that the entire body of a 690 N person who is chinning is raised this distance and that hall the 1.0 s is spent aece1erating upward and the other half accelerating downward, uniform1y in both cases. Make a free-body diagram of the person’s body. and then apply it to find the force his arms must e.11.ert on him during the accelerating part of the chin-up.
|| BIO Forces during chin-ups . People who do chin-ups raise their c 1in just over a bar (the chinning bar). Supporting themselves only by their arms. Typically. the body below the arms is raised by about 30cm in a time of 1.0 s. starting from rest. Assume that the entire body of a 690 N person who is chinning is raised this distance and that hall the 1.0 s is spent aece1erating upward and the other half accelerating downward, uniform1y in both cases. Make a free-body diagram of the person’s body. and then apply it to find the force his arms must e.11.ert on him during the accelerating part of the chin-up.
|| BIO Forces during chin-ups. People who do chin-ups raise their c 1in just over a bar (the chinning bar). Supporting themselves only by their arms. Typically. the body below the arms is raised by about 30cm in a time of 1.0 s. starting from rest. Assume that the entire body of a 690 N person who is chinning is raised this distance and that hall the 1.0 s is spent aece1erating upward and the other half accelerating downward, uniform1y in both cases. Make a free-body diagram of the person’s body. and then apply it to find the force his arms must e.11.ert on him during the accelerating part of the chin-up.
6. An elevator cab is pulled upward by a cable. The cab and its single occupant have a
combined mass of 2000 kg.When that occupant drops a coin, its acceleration relative
to the cab is &8.00 m/s2 downward. What is the tension in the cable?
onto a
The maximum applied force a plastic
grocery bag can withstand before ripping
is 245N. If of 19.0 kg groceries are lifted
up from the floor to the table with an
acceleration of 2.3 m/s? , will the bag
rip? Include a FBD.
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A 17kg crate resting on a horizontal surface is pushed as shown. If the coefficient of static friction u, between
the surfaces is 0.24, what is the minimum force (F) required to start the motion?
O a 4.08N
O b. 70.83N
Oc 39.98N
Od. 694.17N
Windows buut
An object of mass Skg is sliding with a constant velocity of 10m/s on a frcitionless horizontal table. The force
needed to keep the object moving with the same velocity is.
144
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4.
6.
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