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11 Dec 2019
An unstretched ideal spring hangs vertically from a fixed support. A 0.4 kg object is then attached to the lower end of the spring. The object is pulled down to a distance of 0.35 m below the unstretched position 0.20 and released from rest at time t-0. A graph of the subsequent vertical position y of the lower end of the spring as a function of t is given above, where y=0 when the spring was initially unstretched.
1) At which time is the upward velocity of the object the greatest? (A) 0.00 s (B) 0.25 s (C) 0.50 s (D) 0.75 s (E) 1.00 s
2) What is the spring constant of the spring? (A) 16 N/m (B) 20 N/m (C) 32 N/m (D) 40 N/m (E) 64 N/m
An unstretched ideal spring hangs vertically from a fixed support. A 0.4 kg object is then attached to the lower end of the spring. The object is pulled down to a distance of 0.35 m below the unstretched position 0.20 and released from rest at time t-0. A graph of the subsequent vertical position y of the lower end of the spring as a function of t is given above, where y=0 when the spring was initially unstretched.
1) At which time is the upward velocity of the object the greatest? (A) 0.00 s (B) 0.25 s (C) 0.50 s (D) 0.75 s (E) 1.00 s
2) What is the spring constant of the spring? (A) 16 N/m (B) 20 N/m (C) 32 N/m (D) 40 N/m (E) 64 N/m
Supratim PalLv10
12 Oct 2020
