Q. A small sphere with a mass of 3.00×10-3 and carrying a charge of 4.80×10-8 hangs from a thread near a very large, charged insulating sheet. The charge density on the sheet is -2.90×10-9
Find this angle of the thread.
Q. The 100 kg block takes 8.0 s to reach the floor after being released from rest. What is the mass of the block on the left?