Answer:
81.81 kg
Explanation:
= Mass of person = 78.4 kg
= Mass of canister
= Initial velocity of person = 0
= Initial velocity of canister = 3.5 m/s
= Final velocity of person = 2.4 m/s
= Final velocity of canister = 1.2 m/s
The momentum balance in the system is given by
Mass of the canister is 81.81 kg.
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Answer:
h = 0.697 [m]
Explanation:
To solve this problem we must use the energy conservation theorem, where it tells us that kinetic energy is converted to potential energy or vice versa.
where:
Ekinet = kinetic energy [J]
Epot = potential energy [J]
Answer:
tensile stress = 55 x 10⁷ Pa
Explanation:
given,
radius of the copper wire = 4.1 mm = 0.0041 m
the wire stretches = 5.0×10⁻³ l
l = original length
young's modulus of copper = 11 x 10¹⁰ Pa
strain =
tensile stress = young's modulus x strain
tensile stress = 11 x 10¹⁰ x 5.0×10⁻³
tensile stress = 55 x 10⁷ Pa
The tensile stress on the wire is equal to 55 x 10⁷ Pa