BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

The potential energy of a spring is given by the equation PE

Expert replies
by alanforde800Maximus » Tue Oct 18, 2016 8:25 am
The potential energy of a spring is given by the equation PE = (kx^2)/2 where k is a constant and x is the distance the spring is stretched. If K =16 and the spring is stretched to 2 feet and then to 3 feet, how much potential energy is gained by the spring from the moment it is stretched 2 feet to the moment it is stretched 3 feet?

a) 200
b) 128
c) 72
d) 40
e) 32

Please assist with above problem.
Last edited by alanforde800Maximus on Tue Oct 18, 2016 9:08 pm, edited 1 time in total.
Join the discussion
Source: — Problem Solving |

by regor60 » Tue Oct 18, 2016 9:14 am
alanforde800Maximus wrote:The potential energy of a spring is given by the equation PE = (kx^2)/2 where k is a constant and x is the distance the spring is stretched. If x =16 and the spring is stretched to 2 feet and then to 3 feet, how much potential energy is gained by the spring from the moment it is stretched 2 feet to the moment it is stretched 3 feet?

a) 200
b) 128
c) 72
d) 40
e) 32

Please assist with above problem.
I think you mean K=16, otherwise it's not solvable.

Assuming this is the case, going from 2 feet to 3 feet in the equation is 16/2(3^2 - 2^2) = 8*(9-4) = D
Join the discussion

by alanforde800Maximus » Tue Oct 18, 2016 9:09 pm
regor60 wrote:
alanforde800Maximus wrote:The potential energy of a spring is given by the equation PE = (kx^2)/2 where k is a constant and x is the distance the spring is stretched. If x =16 and the spring is stretched to 2 feet and then to 3 feet, how much potential energy is gained by the spring from the moment it is stretched 2 feet to the moment it is stretched 3 feet?

a) 200
b) 128
c) 72
d) 40
e) 32

Please assist with above problem.
I think you mean K=16, otherwise it's not solvable.

Assuming this is the case, going from 2 feet to 3 feet in the equation is 16/2(3^2 - 2^2) = 8*(9-4) = D

yes, it's K =16 sorry for typo.
Join the discussion