In the arrangement shown, the upper end of the string moves horizontally at 50/3 m s⁻¹ and the inclined string makes 53° with the horizontal. The speed of block A is:

Question

G1 Physics · Accepted Answer

The ring/string velocity component along the inclined string is (50/3)cos53°=(50/3)(3/5)=10 m s⁻¹. String constraint gives block speed 10 m s⁻¹. Option B.