Question

Cavendish experiment with diagram.... written in note book...

Answer 1

• In 1797, Henry Cavendish measured the density of the Earth to within an amazing 1% of the actual value.
• His experimental setup consisted of a L=1.80m rod suspended from a wire with a lead sphere on either end of mass m=0.730kg each.
• A large lead ball of mass M=158kg was placed near each of the smaller spheres on the rod (Figure 1).
• Due to the force of gravity, the small balls were attracted to the larger ones, twisting the rod.
• The wire acted as a torsional pendulum, and so by measuring the angle of deflection he was able to find the torque in the wire and then find the attractive force between the larger and smaller spheres.
• However, he first needed to know the wire's torsion coefficient which he measured by observing the oscillation period of the rod.
• The restoring torque given by the torsion wire is given by τ=−κθ, where κ is the torsion coefficient of the wire, and θ is the angle in radians through which the wire has been twisted.

Answer 2

Answer:

sahi h yrr

Explanation:

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