. Why are soldiers in general ordered to “route step" (walk out of step) across a bridge?
Q: If you decrease the length of a pendulum by half, how will its frequency change? O It will decrease…
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Q: The height (m) of a spring over time, in seconds, can be modeled by the function h(t) = 3cos3t + 3…
A: Given data: The height of spring is, ht=3cos3t+3 The time interval is t∈0, π
Q: When four people with a combined mass of 300 kg sit down in a car, they find that the car drops 0.50…
A: Given: The combined mass is M=300 kg. The compression is x=0.50 cm. The mass of the empty car is…
Q: (II) The position of a SHO as a function of time is given by x = 3.8 cos (7/4 + /6) where t is in…
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Q: When four people with a combined mass of 280 kg sit down in a car, they find that the car drops 0.50…
A: The given values with suitable variables are listed below. Here, m denotes the combined mass of…
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Q: If during strenuous exercise your heart rate is 152 beats per minute, determir (a) the frequency of…
A: Given data: The number of heart beats per minute, n=152. (a) The frequency of heartbeat is the…
Q: If a spring is stretched 2.0 cm by a suspended object having a mass of0.55 kg, what is the force…
A: The magnitude of restoring force of spring is given by F=kxk=spring constantx=extension of spring
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Q: According to Kepler’s third law of harmonies, a planet that is twice as far from the sun as earth…
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Q: The result of simultaneous application of two forces, facing away from each other on a spring, m. be…
A: As the result of simultaneous application of two force, facing away from each other on a spring.…
Q: shows a rectangular block of mass in resting on top of a semi - cylindrical surface. If the block is…
A: To find the frequency of oscillation of the block resting on top of a semi-cylindrical surface, we…
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Q: A spring within a spring launcher is compressed a distance, x, and locked into position by a pin at…
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Q: A vertical spring has a length of 0.175 m when a 0.25 kg mass hangs from it, and a length of 0.725 m…
A: The length of the vertical spring is l1 = 0.175 m when the hanging mass is m1 = 0.25 kg. The length…
Q: Why are soldiers in general ordered to “route step” (walk out of step) across a bridge?
A: Given: soldiers are walk out of step
Q: hen they get out of the car and bounce it up and down. What is the frequency of the car's vibration…
A: For to calculate the value of frequency first want to find the value of spring constant. the steps…
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Q: A certain mass hanging from a string of length L has a period of oscillation, Tpend. The same mass…
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Q: A small fly of mass 0.8 g is caught in a spider's web. The web oscillates predominantly with a…
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Q: A person’s heart rate is given in beats per minute. Is this a period or a frequency?
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Q: (II) If one oscillation has 3.0 times the energy of a secondone of equal frequency and mass, what is…
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Q: What determines whether a pendulum swings in a plane or describes a three-dimensional path? The…
A: To determine whether a pendulum swings in a plane or in 3d we check its direction of initial…


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- Sprinters push off from the ball of their foot, then bend their knee to bring their foot up close to the body as they swing their leg forward for the next stride. Why is this an effective strategy for running fast?If s represents the displacement and t represents the time for an object moving with rectilinear motion according to the given function, find the instantaneous velocity for the given time. 7) s=73 +1012+4t + 10; t=3 7) A) 137 B) 87 C) 263 D) 253 8) The power P (in W) generated by a particular windmill is given by P= 0.015 V3 where V is the velocity of the wind (in mph). Find the instantaneous rate of change of power with respect to velocity when the velocity is 9.5 mph. Round answer to the nearest tenth. A) 9.0 W/mph B) 25.7 W/mph C) 4.1 W/mph D) 0.4 W/mph 9) Murrel's formula for calculating the total amount of rest, in minutes, required after performing a particular type of work activity for 30 minutes is given by the formula R(w) = 30(w - ), where w- 1.5 w is the work expended in kilocalories per min. A bicyclist expends 6 kcal/min as she cycles home from work. Find R'(w) for the cyclist; that is, find R'(6). A) 13.33 min2/kcal C) 3.7 min2/kcal B) 2.96 min2/kcal D) 444 min2/kcal 10)…(II) Consider a point on the string of Example 13-3 that is 1.00m from the left-hand end. Determine (a) the max- imum velocity of this point, and (b) its maximum acceleration. (c) What is its velocity and acceleration at t = 2.0s ?
- (a) If your heart rate is 150 beats per minute during strenuous exercise, what is the time per beat in units of seconds? T= ✓ s (b) Find the frequency of a tuning fork that takes 0.00275 s to complete one oscillation. f= Hz(II) The position of a SHO as a function of time is given by X = 3.8 cos(5t/4 + T/6) wheret is in seconds and x in meters. Find (a) the period and frequency, (b) the position and velocity at t = 0, and (c) the velocity and acceleration %3D at t = 2.0 s.When a 0.62-kg mass is attached to a vertical spring, the springstretches by 12 cm. How much mass must be attached to the springto result in a 0.67-s period of oscillation?
- Mice have a leg length of about 17 mm. IF we assume that they have a walking gait, what would their natual speed of walking be using our pendulum model? O 5 cm/s O 13 cm/s O 19 cm/s O 24 cm/s O 27 cm/s O 35 cm/sA mass m = 2.8 kg is at the end of a horizontal spring of spring constant k = 490 N/m on a frictionless horizontal surface. The block is pulled, stretching the spring a distance A = 8.5 cm from equilibrium, and released from rest. a) Calculate the period T of the oscillations in seconds. b)Write an equation for the maximum speed vmax of the block. c)Write an equation for the maximum acceleration amax of the block.A student taking a quiz finds on a reference sheet the two equations f = and v = V She has forgotten what T represents in each equation. (a) Use dimensional analysis to determine the units required for T in each equation. In f = T is measured in ---Select--- In v = V T Tis measured in ---Select--- (b) Identify the physical quantity each T represents. f = →T represents: O frequency O friction O period O tension O mass density V = >T represents: O frequency O friction O period O tension O mass density