Answer
1. A drill initially rotates at a rate of 30.0 rad / s. The drill accelerates...
Your electric drill rotates initially at 5.27 rad/s. You slide the speed control and cause the drill to undergo constant angular acceleration of 0.399 rad/s^2 for 4.99s. What is the drill's angular displacement during that time interval?
An electric drill rotates at 5700 rev/min. (a) What is the frequency of the rotation? rev/s (b) What is the time for one revolution? s (c) What is the angular velocity? rad/s
6) A giant Ferris wheel is spinning at 70 rad/s. It is switched off and accelerates at the rate of -10 rad/s2. How many full revolutions will it complete in 3.0 s?9) What is the total initial acceleration of a tether ball on a 2.0 m rope whose angular velocity changes from 13 rad/s to 7.0 rad/s in 15 s?12) A wheel rotates at an angular velocity of 30 rad/s. If an acceleration of 26 rad/s2 is applied to it,...
1. A drill rotates at 380 rad per s. How many radians does it rotate through as it comes to a stop in 30 seconds. 2. An aluminum bar with length 2m and a coefficient of linear expansion of 0.00023 undergoes a temperature change of 180 deg C. What is the change in length? 2. Temperature is related to what form of energy associated with the movement of atoms and molecules? 4. Define latent heat. 5. What is the difference...
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.821 rad/s. You, with a mass of 72.1 kg, walk clockwise around the platform along its edge at the speed of 1.19 m/s with respect to the platform. Your 20.9 kg poodle also walks clockwise around the platform, but along a circle at half the platform's radius and at half your linear speed with respect to the platform. Your 18.1 kg mutt, on the other hand, sits...
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.915 rad/s. You, with a mass of 68.9 kg, walk clockwise around the platform along its edge at the speed of 1.11 m/s with respect to the platform. Your 20.9 kg poodle also walks clockwise around the platform, but along a circle at half the platform's radius and at half your linear speed with respect to the platform. Your 17.1 kg mutt, on the other hand, sits...
A vertical wheel with a diameter of 50 cm starts from rest and rotates with a constant angular acceleration of 4 rad/s? around a fixed axis through its center counterclockwise. a. Where is the point that is initially at the bottom of the wheel at t = 5 s? Round your answer to one decimal place and express it as an angle in radians between 0 and 2π, relative to the positive x axis. b. What is the point's linear acceleration at...
Rod OA rotates counterclockwise at a constant angular rate θ = 4 rad/s. The double collar B is pin-connected together such that one collar slides over the rotating rod and the other collar slides over the circular rod described by the equation r = (1.6 cos θ) m. If both collars have mass of 0.5 kg, determine the force which the circular rod exerts on one of the collars and the force that OA exerts on the other collar at...
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.913 rad/s. You, with a mass of 69.5 kg, walk clockwise around the platform along its edge at the speed of 1.05 m/s with respect to the platform. Your 20.5-kg poodle also walks clockwise around the platform, but along a circle at half the platform\'s radius and at half your linear speed with respect to the platform. Your 17.9-kg mutt, on the other hand, sits still on...
A horizontal circular platform rotates counterclockwise about
its axis at the rate of 0.923 rad/s. You, with a mass of 68.5 kg,
walk clockwise around the platform along its edge at the speed of
1.11 m/s with respect to the platform. Your 20.1-kg poodle also
walks clockwise around the platform, but along a circle at half the
platform\'s radius and at half your linear speed with respect to
the platform. Your 17.7-kg mutt, on the other hand, sits still on...