Answer:
a) The work done by a nonconservative force depends on the path taken. True.
c) A potential energy function can be specified for a conservative force. True
d) A conservative force permits a two-way conversion between kinetic and potential energies. True
Explanation:
Non-conservative forces dissipate. For example, friction or air resistance or drag.
A conservative force's property is that the work done in moving a particle does not depend on the path it has taken. For example, stored energy or potential energy. It permits two-way conversion between kinetic energy and potential energy. For example if a car goes up a hill, it converted kinetic energy in to potential energy. and if the car goes down the hill without hitting the gas pedal, it will roll down converting the potential energy in to kinetic energy.
b) A nonconservative force permits a two-way conversion between kinetic and potential energies. False
e) A potential energy function can be specified for a nonconservative force. False
f) The work done by a conservative force depends on the path taken. False
Answer:
Velocity is the rate at which the position changes. The average velocity is the displacement or position change (a vector quantity) per time ratio.
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(0.15 x g)/100 = 0.0147N. per cm. length.
<span>Torque short end = (0.0147 x 9) = 0.1323N/cm. </span>
<span>Torque long end = ((100 - 18)/2) x 0.0147 = 0.6027N/cm. </span>
<span>Difference = (0.6027 - 0.1323) = 0.4704N/cm. </span>
<span>(0.4704/3.2) = 0.147cm. from the 18cm. mark, = 17.853cm. from the 0 end of the stick.</span>
Answer:
v (speed) = S / t = 4 * 400 m / (6 * 60 sec) = 4.4 m/s
The average velocity is zero because there is no net vector displacement.
Answer:
53.54 Kg
Explanation:
We know that kinetic energy is given by ![0.5mv^{2}[\tex] where m is mass and v is the speed.Let your speed be v and the speed of the friend will be 1.23vSince kinetic energy is the same then[tex]0.5\times84v^{2}=0.5m_u(1.23)^{2}\\\m_u=53.54 Kg](https://tex.z-dn.net/?f=0.5mv%5E%7B2%7D%5B%5Ctex%5D%20where%20m%20is%20mass%20and%20v%20is%20the%20speed.%3C%2Fp%3E%3Cp%3ELet%20your%20speed%20be%20v%20and%20the%20speed%20of%20the%20friend%20will%20be%201.23v%3C%2Fp%3E%3Cp%3ESince%20kinetic%20energy%20is%20the%20same%20then%3C%2Fp%3E%3Cp%3E%5Btex%5D0.5%5Ctimes84v%5E%7B2%7D%3D0.5m_u%281.23%29%5E%7B2%7D%5C%5C%5Cm_u%3D53.54%20Kg)
