Part A) A pulley is massless and frictionless. The masses 3 kg, 3 kg, and 7 kg are suspended as in the figure. What is the tension T1 in the string between the two blocks on the left-hand side of the pulley? The acceleration of gravity is 9.8 m/s^2.
Answer in units of N.
Part B) What is the magnitude of the acceleration of the lower left-hand block?

Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.