- #1
mopar969
- 200
- 0
The problem is:
A thin slab of material of uniform density with a total mass 3.0 kg is cut in a strange shape: It is bounded by the curves y=4-x^2 and x=0. Initially it is lying in the xy plane. It is free to rotate about the y axi. A force of 8.0 Newtons is constantly applied perpendicular to the slab at the outer bottom corner. What angle (In radians) has it rotated through after 20 seconds?
A helper on this forum told me to do r^2 dm. However my professor say that this is incorrect and that I need to use the are of the object to answer the problem.
If anybody can help me solve this problem it would be very much appreciated!
A thin slab of material of uniform density with a total mass 3.0 kg is cut in a strange shape: It is bounded by the curves y=4-x^2 and x=0. Initially it is lying in the xy plane. It is free to rotate about the y axi. A force of 8.0 Newtons is constantly applied perpendicular to the slab at the outer bottom corner. What angle (In radians) has it rotated through after 20 seconds?
A helper on this forum told me to do r^2 dm. However my professor say that this is incorrect and that I need to use the are of the object to answer the problem.
If anybody can help me solve this problem it would be very much appreciated!