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  1. Thought blocker

    Physics: Post your doubts here!

    Take moments from da hinge, let F b da reaction force of da spring. 15) F × 2 = (40 × 9.8) × 5 2F = 1960 N F = 980 N ------------------------------------ k = 10 kN/m = 10 000 N/m k = F/x x = F/k x = 980/(10 000) x = 0.098 m now convert it to cm i.e is 98 cm.---> C
  2. Thought blocker

    Physics: Post your doubts here!

    Mass in Kg... so m1v1 = (m1+m2)v2 2.5 = 0.11v v = 22.72 ≈ 23 m/s
  3. Thought blocker

    Physics: Post your doubts here!

    5) IDK 7) At R jumper will be at rest, coz no velocity At Q accn is zero as Q is the maximum height gained by jumper. 8) Short answer, because the time taken with each speed is different. Let's do the math behind this - suppose the distance traveled with both speeds is denoted by "s". Suppose...
  4. Thought blocker

    Physics: Post your doubts here!

    Well I considered both of the distance. i) For Tension on top belt (i.e is Q, as given in question "Wheel Q puts tension in the top portion of the belt") it has distance of 0.075 so I used that distance. ii) Torque of P, we need distance of P here so I used 0.05 here.
  5. Thought blocker

    Physics: Post your doubts here!

    13) It will accelerate upwards as + - attracts
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